The Trade-Offs
There is no one-size-fits-all application architecture. When you choose a design, you must evaluate various aspects of the application, your development team, and your schedule to come up with the architecture that strikes a reasonable balance among various factors.
Application Complexity
The size and complexity of the application push toward more tiers. That is, the more complex the application, the more tiers you generally have. By partitioning your application into multiple tiers, it becomes easier to manage the complexity because you can focus on each layer individually and also parcel out the work to separate development teams. A single-tiered application is more difficult to split among various development teams because the ...
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